<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>

</head>
<body>
 <div id="app"></div>
</body>
<script type="text/javascript" src="vuebase.js"></script>
<script>
  var curVue = new vue();
  setTimeout(function(){curVue.$data.a=555},4000);
</script>
</html>
